Seismic performance evaluation of hybrid coupled shear wall system with shear and flexural fuse-type steel coupling beams

IF 2.6 2区工程技术 Q2 ENGINEERING, CIVIL

Earthquake Engineering and Engineering Vibration Pub Date : 2024-07-13 DOI:10.1007/s11803-024-2266-4

Zahra Ramezandoust, Abbas Tajaddini, Panam Zarfam

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Abstract

Replaceable flexural and shear fuse-type coupling beams are used in hybrid coupled shear wall (HCSW) systems, enabling concrete buildings to be promptly recovered after severe earthquakes. This study aimed to analytically evaluate the seismic behavior of flexural and shear fuse beams situated in short-, medium- and high-rise RC buildings that have HCSWs. Three building groups hypothetically located in a high seismic hazard zone were studied. A series of 2D nonlinear time history analyses was accomplished in OpenSees, using the ground motion records scaled at the design basis earthquake level. It was found that the effectiveness of fuses in HCSWs depends on various factors such as size and scale of the building, allowable rotation value, inter-story drift ratio, residual drift quantity, energy dissipation value of the fuses, etc. The results show that shear fuses better meet the requirements of rotations and drifts. In contrast, flexural fuses dissipate more energy, but their sectional stiffness should increase to meet other requirements. It was concluded that adoption of proper fuses depends on the overall scale of the building and on how associated factors are considered.

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带有剪力和挠力熔断型钢耦合梁的混合耦合剪力墙系统的抗震性能评估

在混合耦合剪力墙（HCSW）系统中使用了可更换的挠剪引信型耦合梁，使混凝土建筑能够在严重地震后迅速恢复。本研究旨在对采用混合耦合剪力墙的短、中、高层 RC 建筑中的挠剪引信梁的地震行为进行分析评估。研究了假设位于地震高发区的三组建筑。在 OpenSees 中，使用按设计基准地震级别缩放的地面运动记录，完成了一系列二维非线性时间历程分析。研究发现，高剪切结构中引信的有效性取决于多种因素，如建筑物的大小和规模、允许旋转值、层间漂移比、残余漂移量、引信的耗能值等。结果表明，剪力引信能更好地满足旋转和漂移的要求。相比之下，挠性引信能耗散更多能量，但其截面刚度应增加以满足其他要求。结论是，采用适当的引信取决于建筑物的总体规模以及如何考虑相关因素。

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来源期刊

Earthquake Engineering and Engineering Vibration 工程技术-工程：地质

CiteScore

4.70

自引率

21.40%

发文量

1057

审稿时长

9 months

期刊介绍： Earthquake Engineering and Engineering Vibration is an international journal sponsored by the Institute of Engineering Mechanics (IEM), China Earthquake Administration in cooperation with the Multidisciplinary Center for Earthquake Engineering Research (MCEER), and State University of New York at Buffalo. It promotes scientific exchange between Chinese and foreign scientists and engineers, to improve the theory and practice of earthquake hazards mitigation, preparedness, and recovery. The journal focuses on earthquake engineering in all aspects, including seismology, tsunamis, ground motion characteristics, soil and foundation dynamics, wave propagation, probabilistic and deterministic methods of dynamic analysis, behavior of structures, and methods for earthquake resistant design and retrofit of structures that are germane to practicing engineers. It includes seismic code requirements, as well as supplemental energy dissipation, base isolation, and structural control.

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